https://youtu.be/9fxm85Fy4sQ?si=ydAD5cw7yJODG7bM

What is the byproduct of cellular respiration?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Which system helps circulate oxygen to all of our cells?

• Circulatory system

• Muscular system

• Digestive system

• Nervous system

What do amphibians use to help them respire?

• Gills or lungs

• Feathers

• Fins

• Fur

What is the main function of the alveoli in the lungs?

• Transport nutrients

• Produce mucus

• Exchange gases

• Filter blood

What does the diaphragm do when you inhale?

• Expands and hardens

• Contracts and flattens

• Stiffens and rises

• Relaxes and swells

Which animals have a three-chambered heart?

• Mammals and birds

• Insects

• Fish

• Reptiles and amphibians

What type of blood does the pulmonary artery carry?

• Plasma

• Nutrient-rich blood

• Oxygenated blood

• Deoxygenated blood

What is the primary role of the heart in the circulatory system?

• To filter blood

• To absorb oxygen

• To produce red blood cells

• To power blood circulation

How do fish primarily absorb oxygen?

• By drinking water

• Through their gills

• Using lungs

• Through their skin

What keeps the oxygen-dissolving membranes in the lungs moist?

• Mucus

• Blood

• Water

• Saliva